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E.L. P. COLARDEAU; EXPLOSION'ENGINE. 'APPLICATIONiFlLYED OCT. 22 1918-.

1,307,896.' PnentedJune 24, 1919.

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unirsi) srarns PATENT onnren EMMANUEL LOUIS PAUL COLARDEAU, OF PARIS, FRANCE, ASSIG-NOR TO HENRY CROGI-IAT', OF IIEAIIRIS,` FRANCE.

ExLosIoN-ENGNE.

engines or a single engine vdivided into elements independently fed.v Y

It has for its chief object to enable such installations to be built so that the nnecllani-` cal powers of the engines or engine elements which they comprise, should .be balanced for any power, and more particularly for slow working' of the said engines, and this Without the necessity of using a single carbureter for the feeding of the said englnes or engine elements.

The invention also consists in providing an independent carbureter for each engine or engine element, and in providing each carbureter with a throttle which is not controlled automatically by the corresponding engine or engine element, and in so connecting together on the engine side of the throt-l tle the suction pipes ofthe carbureters7 as to produce an equilibrium between A the pressures obtaining` in the said parts of the suction pipes of the various carbureters.

The single figure of the accompanying drawing shows diagrammatically` an 'installation of two engines according to the invention. i

An ordinary independent carbureter a, al is used comprising a throttle b1 controlled by hand, and the suction pipe of the said earbureter is connected to the admission 0, c1 of the corresponding engine. Preferably, in the suction pipe of each carbureter between its throttle b, b1 and the engine, is arranged a butterfly valve al, d1 automatically controlled by the engine and adapted to control automatically the speed of the said engine.4 According to this invention, that part of the suction pipe of one of the carbureters e. which is between the throttle b and the butterfly valve l is connected by a conduit e Specification of Letters Patent.

of the other carbureter a1.

`say for small outputs of the Patented Jun'e 24, 1919.

Application tiled October 22, 1918. Serial No. 259,219. 1

to the corresponding part of the suction pipe Thus an installation is obtained, in which the two engines are supplied in an identical manner, even if the throttles of ther two carbureters are not opened to exactly the same extent, since the conduit e equalizes the pressures in that part of the suction pipe of the two carbureters, which is on the engine side of the throttle. This arrangement is chiefly of importance for the low speeds of. the engines, that is to carbureters since, when the throttle of a-carbureter is opened, the ower of the engine supplied by the said car ureter, increases, first rapidly when the throttle is slightly open, and then more and more slowly as the throttle is opened more' and more fully. For that'ieason, the conduit e being of no importance except for small outputs, can be made of a comparatively small cross-section.

This very simple arrangement makes it possibleto obtain the same results as if the various engines were' supplied by a single carb-ureter, and att-he same time complications of piping are avoided. lt is more suitable than a single carbureter, in the cases where it may be desired to work only one of the engines of the installation, since it is necessary only t'o provide a cock or valve in the conduit e.

Obviously the invention can be applied to a poly-cylindrical engine comprising several groups of cylinders, where each group of cylinders must be supplied by an independent carbureter.

llaving'now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, l declare that what l claim is:

1. An installation comprising either sev-v vreters being connected together on the engine In testimony whereof I have hereunto sel side of the throttle. my hand in presence of two subscribing wit- 2. AnA installation as set forth in elniln'l, nesses. characterized by the suction pipes of the EMMANUEL LOUIS PAUL COLARDEAU.

Various earbureters being connected together llitiiesses:

by a conduit of a relatively very small cross- EUGN TULLIEU, section. JOHN F. SIMONS. 

